US3749715A - Method of preparing 2,3-dihydro-1h-pyrido-(2,3-b)(1,4)-thiazin-2-ones - Google Patents
Method of preparing 2,3-dihydro-1h-pyrido-(2,3-b)(1,4)-thiazin-2-ones Download PDFInfo
- Publication number
- US3749715A US3749715A US00108206A US3749715DA US3749715A US 3749715 A US3749715 A US 3749715A US 00108206 A US00108206 A US 00108206A US 3749715D A US3749715D A US 3749715DA US 3749715 A US3749715 A US 3749715A
- Authority
- US
- United States
- Prior art keywords
- dihydro
- pyrido
- preparing
- thiazin
- ones
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000000034 method Methods 0.000 title abstract description 8
- BOASKSPVGGTZKJ-UHFFFAOYSA-N 1h-pyrido[2,3-b][1,4]thiazin-2-one Chemical class C1=CC=C2NC(=O)CSC2=N1 BOASKSPVGGTZKJ-UHFFFAOYSA-N 0.000 title description 2
- 239000002253 acid Substances 0.000 abstract description 7
- LKNPLDRVWHXGKZ-UHFFFAOYSA-N 3-nitro-1h-pyridine-2-thione Chemical compound [O-][N+](=O)C1=CC=CN=C1S LKNPLDRVWHXGKZ-UHFFFAOYSA-N 0.000 abstract description 4
- DQOOELMGDDSIBB-UHFFFAOYSA-N 2,3-dihydro-1h-pyrido[2,3-b][1,4]thiazine Chemical compound C1=CC=C2NCCSC2=N1 DQOOELMGDDSIBB-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 10
- 239000001257 hydrogen Substances 0.000 description 10
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 10
- 125000001246 bromo group Chemical group Br* 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 4
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- HKNNERRQSVWCFL-UHFFFAOYSA-N 3-nitropyridine Chemical compound [O-][N+](=O)C1=CC=C=N[CH]1 HKNNERRQSVWCFL-UHFFFAOYSA-N 0.000 description 3
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- 150000002431 hydrogen Chemical group 0.000 description 3
- UUOLETYDNTVQDY-UHFFFAOYSA-N 2-chloro-3-nitropyridine Chemical compound [O-][N+](=O)C1=CC=CN=C1Cl UUOLETYDNTVQDY-UHFFFAOYSA-N 0.000 description 2
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 2
- ZHNUHDYFZUAESO-UHFFFAOYSA-N Formamide Chemical compound NC=O ZHNUHDYFZUAESO-UHFFFAOYSA-N 0.000 description 2
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 description 2
- 125000001309 chloro group Chemical group Cl* 0.000 description 2
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 2
- 125000001153 fluoro group Chemical group F* 0.000 description 2
- 125000002346 iodo group Chemical group I* 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- KMBNEGCONOTJPE-UHFFFAOYSA-N 1h-pyrido[2,3-b][1,4]thiazine Chemical class C1=CC=C2NC=CSC2=N1 KMBNEGCONOTJPE-UHFFFAOYSA-N 0.000 description 1
- XNWFRZJHXBZDAG-UHFFFAOYSA-N 2-METHOXYETHANOL Chemical compound COCCO XNWFRZJHXBZDAG-UHFFFAOYSA-N 0.000 description 1
- 125000001494 2-propynyl group Chemical group [H]C#CC([H])([H])* 0.000 description 1
- AGIJRRREJXSQJR-UHFFFAOYSA-N 2h-thiazine Chemical compound N1SC=CC=C1 AGIJRRREJXSQJR-UHFFFAOYSA-N 0.000 description 1
- -1 3-nitro2-pyridylmercapto Chemical class 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000007868 Raney catalyst Substances 0.000 description 1
- NPXOKRUENSOPAO-UHFFFAOYSA-N Raney nickel Chemical compound [Al].[Ni] NPXOKRUENSOPAO-UHFFFAOYSA-N 0.000 description 1
- 229910000564 Raney nickel Inorganic materials 0.000 description 1
- 229960000583 acetic acid Drugs 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 125000005233 alkylalcohol group Chemical group 0.000 description 1
- 230000029936 alkylation Effects 0.000 description 1
- 238000005804 alkylation reaction Methods 0.000 description 1
- 230000003110 anti-inflammatory effect Effects 0.000 description 1
- DUYAAUVXQSMXQP-UHFFFAOYSA-N ethanethioic S-acid Chemical group CC(S)=O DUYAAUVXQSMXQP-UHFFFAOYSA-N 0.000 description 1
- WBJINCZRORDGAQ-UHFFFAOYSA-N ethyl formate Chemical compound CCOC=O WBJINCZRORDGAQ-UHFFFAOYSA-N 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000012362 glacial acetic acid Substances 0.000 description 1
- 239000002198 insoluble material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 125000000325 methylidene group Chemical group [H]C([H])=* 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D513/00—Heterocyclic compounds containing in the condensed system at least one hetero ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for in groups C07D463/00, C07D477/00 or C07D499/00 - C07D507/00
- C07D513/02—Heterocyclic compounds containing in the condensed system at least one hetero ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for in groups C07D463/00, C07D477/00 or C07D499/00 - C07D507/00 in which the condensed system contains two hetero rings
- C07D513/04—Ortho-condensed systems
Definitions
- the invention relates to an improved process for preparing 2,3-dihydro-1H-pyrido- [2,3-b] [1,4] thiazines.
- Y is bromo, chloro, fluoro or iodo, preferably bromo
- R is hydrogen or methyl
- R is hydrogen, methyl or ethyl
- the Z-mercapto 3 nitropyridine starting material can be prepared according to the method described in J. Pharm. Soc. Japan 64, 201-2 (1944).
- the haloacetic acid moieties are commercially available.
- the intermediate is then dissolved in 300 m1. of 2- methoxyethanol and hydrogenated in a Parr Shaker in the presence of Raney Nickel at 2 to 3 atm. hydrogen according to the method described in Example 1, lines 20-30 of US. Pat. 3,546,220 to yield 2,3-dihydro-1H- pyrido-[2,3-b][1,4]thiazin-2-one, M.P. 209-211 C.
- the alkylation step can be carried out in a number of formamide, dimethylsulfoxide, acetonitrile and C -C alkyl alcohols.
- the reaction is generally carried out at temperatures of from 50 to C. for from 1 to 24 hours.
- a process for preparing compounds of the formula wherein R and X each represent hydrogen or methyl comprising the steps of reacting a 2-mercapto-3-nitropyridine of the formula ⁇ N/ SH wherein X is hydrogen or methyl, with a haloacetic acid moiety of the formula YCIJHi JORi wherein Y is bromo, chloro, fluoro or iodo, R is hydrogen or methyl and R is hydrogen, methyl or ethyl, in the presence of a suitable solvent to yield a 3-nitropyridin-y1- 2-thioacetic acid moiety of the formula NO; X L
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US10820671A | 1971-01-20 | 1971-01-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US3749715A true US3749715A (en) | 1973-07-31 |
Family
ID=22320864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US00108206A Expired - Lifetime US3749715A (en) | 1971-01-20 | 1971-01-20 | Method of preparing 2,3-dihydro-1h-pyrido-(2,3-b)(1,4)-thiazin-2-ones |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US3749715A (fr) |
| BE (1) | BE768305A (fr) |
| CA (1) | CA932733A (fr) |
| CH (1) | CH540287A (fr) |
| DE (1) | DE2109636A1 (fr) |
| FR (1) | FR2122826A5 (fr) |
| GB (1) | GB1321360A (fr) |
| SE (1) | SE372018B (fr) |
| ZA (1) | ZA711249B (fr) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040002495A1 (en) * | 2002-05-20 | 2004-01-01 | Philip Sher | Lactam glycogen phosphorylase inhibitors and method of use |
-
1971
- 1971-01-20 US US00108206A patent/US3749715A/en not_active Expired - Lifetime
- 1971-02-26 ZA ZA711249A patent/ZA711249B/xx unknown
- 1971-03-01 DE DE19712109636 patent/DE2109636A1/de active Pending
- 1971-03-01 SE SE7102579A patent/SE372018B/xx unknown
- 1971-03-26 CA CA108828A patent/CA932733A/en not_active Expired
- 1971-04-19 GB GB2567271*A patent/GB1321360A/en not_active Expired
- 1971-06-09 BE BE768305A patent/BE768305A/fr unknown
- 1971-06-09 FR FR7120967A patent/FR2122826A5/fr not_active Expired
- 1971-06-11 CH CH854671A patent/CH540287A/fr not_active IP Right Cessation
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040002495A1 (en) * | 2002-05-20 | 2004-01-01 | Philip Sher | Lactam glycogen phosphorylase inhibitors and method of use |
| US7057046B2 (en) | 2002-05-20 | 2006-06-06 | Bristol-Myers Squibb Company | Lactam glycogen phosphorylase inhibitors and method of use |
| US20060128687A1 (en) * | 2002-05-20 | 2006-06-15 | Philip Sher | Lactam glycogen phosphorylase inhibitors and method of use |
| US7425550B2 (en) | 2002-05-20 | 2008-09-16 | Bristol-Meyers Squibb Company | Lactam glycogen phosphorylase inhibitors and method of use |
Also Published As
| Publication number | Publication date |
|---|---|
| GB1321360A (en) | 1973-06-27 |
| FR2122826A5 (fr) | 1972-09-01 |
| ZA711249B (en) | 1971-11-24 |
| DE2109636A1 (de) | 1972-08-03 |
| BE768305A (fr) | 1971-12-09 |
| CA932733A (en) | 1973-08-28 |
| SE372018B (fr) | 1974-12-09 |
| CH540287A (fr) | 1973-08-15 |
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